TWI747026B - Uplink beam indicating method and equipment - Google Patents

Abstract

The present invention provides an uplink beam indicating method and device. The method includes a base station dynamically indicating a transmitting beam of a first uplink signal to a terminal by transmitting beam indicating information. The first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH.

Description

Uplink beam indicating method and equipment

The invention belongs to the field of mobile communication technology, and specifically relates to an uplink beam indicating method and equipment.

A wireless transmitter equipped with multiple antennas (such as a base station gNB or User Equipment (User Equipment, UE)) can transmit wireless signals by forming a beam directed in a specific direction through beamforming. The width and direction of the beam can be flexibly adjusted by applying appropriate weights on each antenna unit. Beamforming can be performed in the digital domain or the analog domain.

When each antenna unit has a separate baseband module, each antenna unit can independently control the amplitude and phase of the signal transmitted on the antenna unit, thereby realizing digital beamforming. Digital beamforming can be narrowband beamforming. That is, at a given moment, the transmitter can use different digital beamforming in different frequency bands, and it is not necessary to use the same digital beamforming in the entire system bandwidth.

If multiple antenna elements share the same digital baseband element, and each antenna element has an independent phase shifter, these antenna elements can form an analog beam. In this case, the signal sent on an antenna unit can only be independently adjusted for the transmission phase, and cannot be independently adjusted for the amplitude. Therefore, analog beams are usually broadband (applied to the bandwidth of the entire system) and can only be multiplexed in the time domain.

Due to the reduction in the use of digital modules, the pure analog beamforming transmitter has lower hardware cost and power consumption compared to the transmitter using digital beamforming. In an actual system, beamforming includes digital beamforming, analog beamforming, and analog-digital hybrid beamforming.

Related technologies have problems with the adjustment of the uplink beamforming of the terminal, such as slow adjustment speed and high overhead. Therefore, a solution is urgently needed that can improve the efficiency of uplink beamforming adjustment.

The technical problem to be solved by the embodiments of the present invention is to provide an uplink beam indicating method and device to improve the adjustment efficiency of uplink beamforming.

In order to solve the above technical problem, an embodiment of the present invention provides an uplink beam indicating method, which includes: a base station dynamically instructs a terminal to transmit beams of a first uplink signal by sending beam indicating information; wherein, the first uplink signal includes a sounding reference At least one of the signal SRS and the signal transmitted on the physical uplink control channel PUCCH.

Optionally, the embodiment of the present invention also provides another uplink beam indication method, which includes: the base station dynamically instructs the terminal to transmit the beam of the first uplink signal by sending beam indication information; wherein, the first uplink signal is a physical uplink A signal transmitted on the shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from a plurality of candidate reference signals, and the candidate reference signals include reference signals other than the first reference signal, and the first reference signal The reference signal corresponding to the uplink reference signal resource acquired by the channel state information CSI in the uplink transmission mode corresponding to the PUSCH configured for the base station for the terminal.

Optionally, an embodiment of the present invention also provides another uplink beam indication method, including: receiving signaling information dynamically sent by a base station, the signaling information including transmission beam indication information for indicating the transmission beam of the first uplink signal According to the signaling information, determine the transmission beam of the first uplink signal; wherein, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH.

Optionally, an embodiment of the present invention also provides another uplink beam indication method, including: receiving signaling information dynamically sent by a base station, the signaling information including transmission beam indication information for indicating the transmission beam of the first uplink signal According to the signaling information, determine the transmission beam of the first uplink signal; wherein, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmission beam indication information is used from a plurality of candidate reference signals Indicate the index of one or more reference signals, the candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is the channel configured by the base station for the terminal for the uplink transmission mode corresponding to the PUSCH The reference signal corresponding to the uplink reference signal resource obtained by the status information CSI.

An embodiment of the present invention also provides a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; the processor is used to send beam instructions The information dynamically indicates the transmission beam of the first uplink signal to the terminal; wherein, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on a physical uplink control channel PUCCH.

Optionally, the embodiment of the present invention also provides another base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; the processor uses The transmission beam indication information is used to dynamically indicate the transmission beam of the first uplink signal to the terminal; wherein the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmission beam indication information is used to refer to multiple candidates The signal indicates one or more reference signals, the candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is a channel configured by the base station for the terminal for the uplink transmission mode corresponding to the PUSCH The reference signal corresponding to the uplink reference signal resource obtained by the status information CSI.

Optionally, the embodiment of the present invention also provides another base station, including: a transceiver unit, configured to dynamically indicate the transmission beam of the first uplink signal to the terminal by transmitting beam indication information; wherein, the first uplink signal includes detection At least one of the reference signal SRS and the signal transmitted on the physical uplink control channel PUCCH.

Optionally, the embodiment of the present invention also provides another base station, including: a transceiving unit, configured to dynamically indicate the transmission beam of the first uplink signal to the terminal by transmitting beam indication information; wherein the first uplink signal is a physical entity The signal transmitted on the uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from a plurality of candidate reference signals. The candidate reference signals include reference signals other than the first reference signal. The signal is the reference signal corresponding to the uplink reference signal resource configured by the base station for the terminal and used for the uplink reference signal resource acquired by the channel state information CSI in the uplink transmission mode corresponding to the PUSCH.

The embodiment of the present invention also provides a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; the processor is used to receive dynamic transmissions from the base station The signaling information includes transmission beam indication information for indicating the transmission beam of the first uplink signal; according to the signaling information, the transmission beam of the first uplink signal is determined; wherein, the first uplink signal includes At least one of the sounding reference signal SRS and the signal transmitted on the physical uplink control channel PUCCH.

Optionally, the embodiment of the present invention also provides another terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; the processor is used for Receive signaling information dynamically sent by the base station, the signaling information including transmission beam indication information for indicating the transmission beam of the first uplink signal; determine the transmission beam of the first uplink signal according to the signaling information; wherein, the The first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate the index of one or more reference signals from a plurality of candidate reference signals, and the candidate reference signal includes other than the first reference signal. The first reference signal is the reference signal corresponding to the uplink reference signal resource configured by the base station for the terminal and used for the uplink reference signal resource acquired by the channel state information CSI in the uplink transmission mode corresponding to the PUSCH.

Optionally, the embodiment of the present invention also provides another terminal, including: a transceiving unit for receiving signaling information dynamically sent by the base station, the signaling information including a transmission beam used to indicate a transmission beam of the first uplink signal Indication information; a beam determining unit for determining the transmission beam of the first uplink signal according to the signaling information; wherein, the first uplink signal includes at least one of the sounding reference signal SRS and the signal transmitted on the physical uplink control channel PUCCH A sort of.

Optionally, the embodiment of the present invention also provides another terminal, including: a transceiving unit for receiving signaling information dynamically sent by the base station, the signaling information including a transmission beam used to indicate a transmission beam of the first uplink signal Indication information; a beam determination unit for determining the transmission beam of the first uplink signal according to the signaling information; wherein the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmission beam indication information is used Indicating the index of one or more reference signals from a plurality of candidate reference signals, the candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is configured by the base station for the terminal for the PUSCH The reference signal corresponding to the uplink reference signal resource obtained by the channel status information CSI in the corresponding uplink transmission mode.

The embodiment of the present invention also provides a computer-readable storage medium, including instructions, which when running on a computer, cause the computer to execute the above-mentioned uplink beam instruction method.

Compared with related technologies, the uplink beam indicating method and device provided by the embodiments of the present invention can increase the flexibility of uplink beamforming and improve the efficiency of beam adjustment, thereby improving the performance of the communication system, and improving terminal movement, rotation or blocking, etc. Stability of uplink transmission in the scene.

Steps 31, 41, 51-52, 61-62‧‧‧

21, 90, 100‧‧‧Terminal

22, 70, 80‧‧‧Base station

701, 901‧‧‧ processor

702, 902‧‧‧Transceiver

703, 903‧‧‧Memory

801‧‧‧Transceiver unit

904‧‧‧User Interface

101‧‧‧Transceiver unit

102‧‧‧Beam determination unit

In order to explain the technical solutions of the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments of the present invention. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without making progressive labor.

Fig. 1 shows a schematic diagram of the relationship between PUSCH transmission beams and SRS transmission beams; Fig. 2 shows a block diagram of a wireless communication system applied in an embodiment of the present invention; Fig. 3 shows an uplink beam indication on the base station side according to an embodiment of the present invention Flowchart of the method; Figure 4 is another flow chart of the uplink beam indicating method on the base station side provided by an embodiment of the present invention; Figure 5 is a flow chart of the uplink beam indicating method on the terminal side provided by an embodiment of the present invention; Figure 6 FIG. 7 is a schematic diagram of the structure of a base station provided by an embodiment of the present invention; FIG. 8 is another structure of a base station provided by an embodiment of the present invention Schematic diagram; FIG. 9 is a schematic structural diagram of a terminal provided by an embodiment of the present invention; FIG. 10 is another schematic structural diagram of a terminal provided by an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. Although the drawings show exemplary embodiments of the present invention, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

The terms "first", "second", etc. in the specification of the present invention and the scope of the patent application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the materials used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein, for example, can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations of them are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to the clearly listed Those steps or units may include other steps or units that are not clearly listed or are inherent to these processes, methods, products, or equipment. "And/or" in the specification and the scope of the patent application means at least one of the connected objects.

The technology described herein is not limited to Long Time Evolution (LTE)/LTE-Advanced (LTE-A) and NR systems, and can also be used in various wireless communication systems, such as Code Division Multiple Access (Code Division Multiple Access). Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (Single-carrier Frequency-Division Multiple Access, SC-FDMA) and other systems. The terms "system" and "network" are often used interchangeably. The CDMA system can implement radio technologies such as CDMA2000 and Universal Terrestrial Radio Access (UTRA). UTRA includes Wideband Code Division Multiple Access (WCDMA) and other CDMA variants. The TDMA system can implement radio technologies such as the Global System for Mobile Communication (GSM). The OFDMA system can implement radios such as UltraMobile Broadband (UMB), Evolution-UTRA (Evolution-UTRA, E-UTRA), IEEE 1102.11 (Wi-Fi), IEEE 1102.16 (WiMAX), IEEE 1102.20, Flash-OFDM, etc. Technology. UTRA and E-UTRA are parts of Universal Mobile Telecommunications System (UMTS). LTE and more advanced LTE (such as LTE-A) are new UMTS versions that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). CDMA2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). The technology described in this article can be used for the systems and radio technologies mentioned above as well as other systems and radio technologies. However, the following description describes the NR system for illustrative purposes, and NR terminology is used in most of the description below, although these techniques can also be applied to applications other than NR system applications.

The following description provides examples and does not limit the scope, applicability, or configuration set forth in the scope of the patent application. Changes may be made to the function and arrangement of the discussed elements without departing from the spirit and scope of the present invention. Various examples may omit, substitute, or add various procedures or elements as appropriate. For example, the described method can be performed in an order different from that described, and various steps can be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

To help better understand the present invention, the following introduces related technologies that the present invention may involve:

Uplink analog beamforming (UL analog beamforming):

User equipment (UE) equipped with multiple antennas can perform analog beamforming on the transmitted signal. For the uplink transmission from the UE to the base station, the analog beam used to send the uplink signal can be obtained from the uplink signal or the downlink signal.

1) If the consistency of the downlink (DL) and uplink (UL) beams of the UE is established, the UE can obtain the optimal uplink transmission beam (UL Tx beam) by measuring the downlink reference signal. The UE can derive the UL Tx beam through the DL beam of the DL reference signal. The downlink reference signal used for UL Tx beam acquisition may be pre-configured, configured through high-level signaling, or indicated to the UE through dynamic signaling. In the 5G system, the downlink reference signal used to obtain the uplink transmission beam can be a channel state information reference signal (CSI-RS) or a synchronization signal/physical broadcast channel block (SS/PBCH block, SSB), where SS stands for Synchronisation signal, and PBCH stands for Physical broadcast channel.

2) Regardless of whether the beam consistency between DL and UL is established, the base station can obtain the optimal uplink Tx beam of other uplink signals by measuring the UL reference signal sent by the UE. The UE can send a set of UL reference signals, and different UL reference signals are beamformed through different sending beams, and the base station can select the best one for other uplink signals based on the measurement results by measuring these uplink reference signals The uplink transmit beam. In the NR system, the base station semi-persistently configures or dynamically triggers a group of UL reference signal resources for the UE through signaling. The UE sends the UL reference signal according to the configuration of the base station. After receiving the uplink reference signal sent by the UE, the base station sends a reference signal resource indication (for example, the reference signal resource label) to the UE. The ULTx beam used by the UE to transmit the UL reference signal may be controlled by the base station, or selected by the UE and transparent to the base station. After the UE receives the UL reference signal indication of the base station, the UE can use the Tx beam that sends the reference signal corresponding to the UL reference signal resource indication as the transmission beam of the uplink signal. In a 5G system, the reference signal that can be used for uplink transmission beam measurement is a sounding reference signal (Sounding Reference Signal, SRS).

Sounding Reference Signal (SRS):

SRS is a reference signal used for uplink measurement. Before the 5G system, SRS was mainly used for the measurement of uplink channel status information for link self-adjustment. The first version of the 5G standard supports the following SRS features:

1) Multiple SRS resources form an SRS resource set. An SRS resource set configured for the UE indicates its purpose through the high-level parameter "SRS-SetUse". The configurable values of "SRS-SetUse" include "beam management", "codebook", "noncodebook", and "'antennaSwitching". When an SRS resource set is configured as "beam management", it can be used for UL beam training. The SRS resource set configured as "codebook" or "noncodebook" is mainly used for uplink CSI acquisition, and can also be used for UL beam training. For ease of description, in the following, the SRS used for UL beam training is denoted as SRS_BM. Each SRS resource can be configured with high-level signaling "SpatialRelationInfo". In the 3GPP NR system, the "SpatialRelationInfo" of the SRS resource here corresponds to the SRS-SpatialRelationInfo parameter in the high-level signaling SRS-Resource parameter in TS38.331. For ease of presentation, "SpatialRelationInfo" is used to indicate a signal or The spatial-related parameter information of the resource, including but not limited to SRS-SpatialRelationInfo, PUCCH-SpatialRelationInfo, QCL-Info and other parameters with similar functions in the 3GPP NR protocol, is used to indicate the transmission beam of the SRS.

Rel-15 supports the following UL beam management process:

‧U1/U3

‧All SRS resources in an SRS resource set with SRS-SetUse configured as "beam management" are not configured with "SpatialRelationInfo"

o The ULTx beam is completely determined by the UE

o For example, there is no prior beam information during initial beam training

‧U2

‧All SRS resources in an SRS resource set with SRS-SetUse configured as “beam management” are configured with the same “SpatialRelationInfo”

‧Can scan the receiving beam.

2) SRS resources can be periodic, semi-persistent, or aperiodic. The transmission period and offset of periodic SRS (P (Periodic) SRS) and semi-persistent SRS (SP (Semi-persistent) SRS) are configured by high-level signaling. The 2-bit trigger field used to trigger SRS in Downlink Control Information (DCI) can be used to trigger aperiodic SRS (AP (Aperiodic) SRS) to be transmitted in a time slot. The 4 trigger states used to trigger the AP SRS domain are used to indicate: no SRS transmission, or transmission of the 1st/2nd/3rd SRS resource set. The AP-SRS offset is configured for each AP SRS resource set through high-level signaling, and corresponds to the trigger state.

3) Optionally, the UL Tx beam of a target SRS resource can be indicated by high-level signaling "SpatialRelationInfo". "SpatialRelationInfo" indicates a source reference signal (for example, CSI-RS, or SSB, or SRS). The UE can use the indicated source reference signal to deduce the UL transmit beam of the target SRS. The source reference signal of type CSI-RS and SSB can only be configured to UEs whose downlink and uplink beam conformity is established, and the source reference signal of type SRS can be configured to any UE.

Beam management for PUSCH

1) The UL Tx beam of PUSCH is indirectly indicated. The PUSCH scheduled through a UL grant assumes that the PUSCH uses the same transmission beam as the SRS resource indicated by the measurement reference signal resource indicator (SRS resource indicator, SRI) in the UL grant. The PUSCH transmission beam is the same as the transmission beam of the most recent SRS transmission of the SRS resource indicated by the SRI in the UL grant DCI corresponding to the PUSCH before the UL grant corresponding to the PUSCH is received by the terminal.

For example, the PUSCH sent at time n is scheduled by a UL grant DCI (for example, DCI format 0_1) in a PDCCH, and the SRI contained in this DCI indicates the first SRS resource, then the PUSCH transmission beam sent at time n The transmission beam used for the SRS transmission corresponding to the first SRS resource for the last time before the PDCCH that schedules the DCI of this PUSCH.

As shown in Figure 1, assuming that PUSCH is an uplink transmission based on a codebook, the base station configures an SRS resource set for the uplink transmission based on the codebook, including two SRS resources: SRS resource 0 and SRS resource 1. The time t1,..., t6 in the figure represents the start time of data transmission. If the base station sends a PDCCH carrying UL grant DCI to the terminal at time t5, and the SRI indicates SRS resource 0, the PUSCH is scheduled to start transmission at time t6. Then the beam of the PUSCH started to be transmitted at time t6 is the same as the transmission beam when the SRS is transmitted at time t3.

In the related art NR system, for codebook-based uplink transmission, an SRS resource set used for CSI acquisition contains up to 2 SRS resources, and the SRI in the UL grant is used for the 2 SRS configured from the SRS resource set An SRS resource is indicated in the resource. In this way, codebook-based uplink transmission supports beam selection between up to 2 UL transmission beams through SRI. For non-codebook uplink transmission, an SRS resource set used for CSI acquisition contains a maximum of 4 SRS resources, and the SRI in the UL grant is used to indicate one or more SRS resources from the 4 SRS resources configured in the SRS resource set. In this way, the codebook-based uplink transmission supports SRI transmission in a maximum of 4 ULs.

Analog beamforming is mainly used in high frequency bands, such as the frequency band from 6 GHz to 52.6 GHz. This frequency band is usually called the millimeter wave band (mmWave band). Compared with the frequency band below 6GHz, the propagation loss in the high frequency range (caused by path loss, scattering, reflection, etc.) is more serious. Due to the mobility and rotation of the UE, the beam blocking between the transmitter and the receiver is also more frequent. Therefore, it is very necessary to use flexible beam adjustment to adapt to the rapidly changing propagation channel to ensure the quality and stability of beamforming.

The analog beamforming scheme supported by the 3GPP R15 version in the related technology is relatively limited, and the following problems mainly exist.

1. The UL Tx beam (for example, refer to the "SpatialRelationInfo" method) is semi-statically configured for each SRS resource or for an SRS resource set, so it cannot be flexibly adjusted. When the UL transmission beam of an SRS resource needs to be changed, RRC reconfiguration is required. The delay of RRC reconfiguration is as high as 100-200ms. This will affect the performance of analog beamforming in delay-sensitive application scenarios.

2. The AP SRS trigger mechanism in the related art only supports 3 different SRS activation states (gNB can only activate one of the 3 AP SRS resource sets through DCI). Considering that the system may need to perform a large number of SRS configurations for different purposes, this mechanism is very inflexible. For example, consider a hybrid beamforming system. Then it needs at least two SRS resource sets for codebook-based uplink transmission: the first SRS resource set is used for simulated beamforming (for example, this SRS resource set can be configured as SRS-SetUse='beam management'), The second SRS resource set is used for CSI acquisition (for example, this SRS resource set can be configured as SRS-SetUse='codebook'). The gNB first needs to trigger the first SRS resource set to perform UL beam scanning to obtain the optimal UL transmission beam. Then the gNB configures "SpatialRelationInfo" for the second SRS resource set through RRC configuration based on the result of the previous beam scan. Then the gNB triggers the second SRS resource set for CSI acquisition. In this way, the base station needs to trigger the first SRS resource set aperiodically to search for a new UL Tx beam, and if a new beam is found, it performs RRC reconfiguration to reconfigure "SpatialRelationInfo" for the second SRS resource set. Repeating this process reduces the frequency of increased RRC reconfiguration, increases system delay, increases service interruption, and limits the flexibility of beam adjustment.

3. The PUSCH transmission beam is not explicitly indicated, but the transmission beam of the most recent SRS transmission using the SRS resource indicated by the SRI in the same scheduling grant. This adds unnecessary restrictions to the system. For example, gNB schedules the first SRS in time slot n, and the second SRS in time slot n+k, and PUSCH is sent in time slot n+k+L, where k>0 and L>0. The NR system design in the related technology stipulates that the PUSCH must use the same transmission beam as the SRS resource indicated by the SRI in the last SRS transmission. This means that once a new SRS using a new beam is triggered, the PUSCH must wait until the new beam is used. The SRS can only be scheduled after the process of acquiring the CSI by the SRS. This will put a lot of restrictions on scheduling. A better system design should allow PUSCH to use earlier transmission beams for SRS transmission. In this way, when the gNB switches the SRS beam (and has not completed the latest CSI acquisition), the PUSCH can still use the previous SRS beam for data transmission.

In view of the foregoing problems, the embodiments of the present invention provide an uplink beam indicating method, which can increase the flexibility of uplink beamforming and improve the efficiency of beam adjustment. Please refer to FIG. 2, which shows a block diagram of a wireless communication system to which an embodiment of the present invention is applied. The wireless communication system includes a terminal 21 and a base station 22. Among them, the terminal 21 may also be called a user terminal or UE (User Equipment), and the terminal 21 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (Personal Digital Assistant, PDA). ), Mobile Internet Device (MID), Wearable Device (Wearable Device), or in-vehicle device and other terminal-side devices. It should be noted that the specific type of terminal 21 is not limited in the embodiment of the present invention. The base station 22 may be a base station of 5G and later versions (for example: gNB, 5G NR NB, etc.), or a base station in other communication systems (for example: eNB, WLAN access point, or other access point, etc.), where , The base station can be called Node B, evolved Node B, access point, base transceiver station (Base Transceiver Station, BTS), radio base station, radio transceiver, basic service set (Basic Service Set, BSS), extended Service Set (Extended Service Set, ESS), Node B, Evolved Node B (eNB), Home Node B, Home Evolved Node B, WLAN Access Point, WiFi Node or some other appropriate term in this field, as long as To achieve the same technical effect, the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present invention, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

The base station 22 may communicate with the terminal 21 under the control of the base station controller. In various examples, the base station controller may be a part of the core network or some base stations. Some base stations can communicate control information or user data with the core network through the backhaul. In some examples, some of these base stations may directly or indirectly communicate with each other through a backhaul link, which may be a wired or wireless communication link. The wireless communication system can support operations on multiple carriers (waveform signals of different frequencies). Multi-carrier transmitters can simultaneously transmit modulated signals on these multiple carriers. For example, each communication link may be a multi-carrier signal modulated according to various radio technologies. Each modulated signal can be sent on a different carrier and can carry control information (for example, reference signal, control channel, etc.), overhead information, data, and so on.

The base station 22 can wirelessly communicate with the terminal 21 via one or more access point antennas. Each base station can provide communication coverage for its corresponding coverage area. The coverage area of the access point can be divided into magnetic areas that constitute only a part of the coverage area. The wireless communication system may include different types of base stations (for example, large base stations, micro base stations, or pico base stations). The base station can also use different radio technologies, such as cellular or WLAN radio access technologies. Base stations can be associated with the same or different access networks or operator deployments. The coverage areas of different base stations (including the coverage areas of the same or different types of base stations, the coverage areas using the same or different radio technologies, or the coverage areas belonging to the same or different access networks) may overlap.

The communication link in a wireless communication system may include an uplink for carrying uplink (UL) transmission (for example, from the terminal 21 to the base station 22), or for carrying a downlink (DL) The terminal of the transmission (for example, from the base station 22 to the user equipment 21). UL transmission may also be referred to as reverse link transmission, and DL transmission may also be referred to as forward link transmission. Downlink transmission can use licensed frequency bands, unlicensed frequency bands, or both. Similarly, uplink transmission can be performed using licensed frequency bands, unlicensed frequency bands, or both.

Referring to FIG. 3, an uplink beam indication method provided by an embodiment of the present invention, when applied to the base station side, includes the following steps:

Step 31: The base station dynamically indicates the transmission beam of the first uplink signal to the terminal by sending beam indication information, where, here, the first uplink signal includes the sounding reference signal (SRS) and the transmission on the physical uplink control channel (PUCCH). At least one of the signals.

Here, in step 31, the base station may specifically send a transmission beam indicating the first uplink signal to the terminal through physical layer signaling, such as DCI.

Through the above steps, the base station of the embodiment of the present invention can dynamically indicate the transmission beam of the first uplink signal to the terminal, without having to adjust SRS or PUCCH etc. through static or semi-static configuration of high-level signaling (such as RRC messages) The signal transmission beam can reduce the delay required for transmission beam adjustment, improve system performance, and improve the performance of analog beamforming in delay-sensitive application scenarios.

Referring to FIG. 4, an embodiment of the present invention provides another uplink beam indication method. When applied to the base station side, it includes the following steps:

Step 41: The base station dynamically indicates the transmitting beam of the first uplink signal to the terminal by transmitting beam instruction information.

Here, the first uplink signal is a signal transmitted on a physical uplink shared channel (PUSCH), and the transmitted beam indication information is used to indicate one or more reference signals from a plurality of candidate reference signals, and the candidate reference signal includes the first A reference signal other than a reference signal, and the first reference signal is a reference signal corresponding to an uplink reference signal resource configured by the base station for the terminal and used for obtaining channel status information (CSI) in the uplink transmission mode corresponding to the PUSCH.

Optionally, the candidate reference signal includes the first reference signal, and a reference signal other than the first reference signal.

Optionally, the candidate reference signal only includes reference signals other than the first reference signal.

For example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource set in which the high-level signaling usage is configured as'codebook' The SRS signal corresponding to the SRS resource in the internal SRS resource, using the method of this embodiment, the base station can indicate another SRS signal to the terminal through the transmission beam indication information, and the terminal determines the PUSCH transmission according to the SRS signal indicated by the transmission beam indication information Beam, instead of having to determine the PUSCH transmission beam according to the beam of the SRS signal corresponding to the SRS resource in the SRS resource set whose usage is configured as the'codebook'.

For another example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource with a high-level signaling usage configured as a'codebook' The set contains two SRS resources {SRS 1, SRS 2}. The base station instructs the terminal to use SRS 1 to determine the PUSCH precoding matrix. Using the method of this embodiment, the base station can indicate SRS 2 to the terminal through the transmission beam indication information. The corresponding SRS signal enables the terminal to determine the transmission beam of the PUSCH according to the beam of the SRS signal corresponding to SRS 2.

That is, the embodiment of the present invention does not exclude that when the first uplink signal is a PUSCH signal in a codebook-based transmission mode, the base station indicates to the terminal that the high-level signaling usage is configured as'codebook' through the transmission beam indication information The SRS signal corresponding to the SRS resource in the SRS resource set enables the terminal to determine the PUSCH transmission beam scheme according to the beam of the SRS signal.

Of course, the present invention is also applicable to scenarios where the first signal is a PUSCH other than a codebook or PUSCH in other transmission modes.

Here, in step 41, the base station may specifically send a transmission beam indicating the first uplink signal to the terminal through physical layer signaling, such as DCI.

It can be seen from the above step 41 that, when indicating the transmission beam corresponding to the PUSCH, the embodiment of the present invention can select the target reference signal from candidate reference signals including other reference signals other than the first reference signal, for indicating the first reference signal. The transmit beam of the reference signal. Compared with the implementation of selecting only the target reference signal from the first reference signal, the embodiment of the present invention can expand the selection range of uplink beamforming, increase the flexibility of uplink beamforming, and improve the efficiency of beam adjustment, so that Improve the performance of the communication system and enhance the stability of uplink transmission in scenarios such as terminal movement, rotation or blocking.

In the process shown in FIG. 3, the first uplink signal includes at least one of SRS and PUCCH signals. In the process shown in FIG. 4, the first uplink signal refers to the signal on the PUSCH. That is, in the embodiment of the present invention, the first uplink signal may have different content in different scenarios. The content introduced in the following, unless otherwise specified, will be applicable to the application scenarios of FIG. 3 and FIG. 4. In addition, for the convenience of description, sometimes the signal transmitted on the PUSCH or PUCCH is sometimes referred to as PUSCH or PUCCH for short.

In the embodiment of the present invention, the transmission beam indication information in step 31 or 41 includes at least one of the following information: a reference signal index of one or more reference signals among a plurality of candidate reference signals; one of the plurality of candidate reference signals Or reference signal identification of multiple reference signals; index of one or more transmission beams among multiple candidate transmission beams.

In the embodiment of the present invention, the transmission beam indication information may be carried in the physical layer signaling.

In the embodiment of the present invention, the transmission beam of the first uplink signal may be explicitly indicated by a predetermined field in the physical layer signaling. The predetermined domain here can be pre-defined by relevant standards, or pre-appointed by the base station and the terminal.

In the embodiment of the present invention, in the above step 31 or 41, the transmission beam indication information is used to indicate the transmission beam of the first uplink signal, and may specifically include the indication information of the transmission beam of the first uplink signal. In some scenarios, the transmission beam indication information may also be used to indicate the transmission beams of other uplink signals. In this case, the transmission beam indication information may also include the indication information of the transmission beams of other uplink signals.

In the above step 31 or 41, the base station dynamically instructs the terminal to send the first uplink signal beam, which may specifically be: the base station instructs the terminal to send the first uplink signal beam through physical layer signaling, and the physical layer signal The command carries indication information of the first uplink signal and indication information of the transmission beam of the first uplink signal. That is, the physical layer signaling not only includes the indication information of the transmission beam of the first uplink signal, but also includes the indication information of the first uplink signal to indicate the specific first uplink signal.

As an implementation manner, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are respectively indicated through two independent fields in the physical layer signaling. As another implementation manner, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are indicated by the same field in the physical layer signaling. Here, the two independent domains or the same domain may be pre-defined by relevant standards, or pre-appointed by the base station and the terminal.

In the embodiment of the present invention, the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the indication information of the transmission beam of the first uplink signal may have a pre-configured correspondence relationship. Here, the corresponding relationship may be pre-configured by the base station to the terminal through high-level signaling, or may be agreed upon in related standards/protocols.

When there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the transmission beam indication information of the first uplink signal, the physical layer signaling carries There are the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal. Specifically, it may carry one of the above two kinds of indication information, and the other indication information may be carried implicitly. That is to say, the other kind of instruction information can be determined by the carried one kind of instruction information and the foregoing corresponding relationship.

When there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the transmission beam indication information of the first uplink signal, if the physical layer signaling is used The same field indicates the above two indication information. A specific implementation may be: each value of the same field indicates a first uplink signal, and the first uplink signals indicated by different values may be the same or different, and , There is a pre-configured correspondence between each value and the indication information of the transmission beam of the first uplink signal. In this case, the same value can indicate the same uplink signal, but different uplink transmission beams are used, so that the terminal can be dynamically instructed to use different transmission beams to send the same uplink signal, such as SRS resources. This implementation can make the base station do not need to change the uplink signal (such as SRS resource) when switching the uplink analog beamforming, so it can allow the base station to configure a smaller number of SRS resources, thereby simplifying the cell planning of the network.

In the embodiment of the present invention, the indication information of the transmission beam of the first uplink signal may indicate one or more target transmission beams. As an implementation manner, when the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam, the target transmission beam can be used for all signals indicated by the indication information of the first uplink signal. For example, the first uplink signal indication information indicates an SRS resource set (the first uplink signal is the uplink signal corresponding to all SRS resources in this SRS resource set), this SRS resource set contains multiple SRS resources, and the first The transmission beam indication information of the uplink signal only indicates the target transmission beam of one of the SRS resources, and the target transmission beam is applicable to all SRS resources in this SRS resource set. For another example, the first uplink signal indication information indicates an SRS resource set (the first uplink signal is an uplink signal corresponding to all SRS resources in this SRS resource set), this SRS resource set includes multiple SRS resources, and the first uplink signal The transmission beam indication information of an uplink signal indicates a target transmission beam for this SRS resource set, and the target transmission beam is applicable to all SRS resources in this SRS resource set.

As another implementation manner, the target transmission beam indicated by the indication information of the transmission beam of the first uplink signal has a corresponding relationship with the transmission beams of all signals included in the first uplink signal. The corresponding relationship here may be agreed in the relevant standards/protocols, or may be determined by the base station and the terminal through interaction in advance. For example, the first uplink signal indication information indicates an SRS resource set (the first uplink signal is the uplink signal corresponding to all SRS resources in this SRS resource set), this SRS resource set contains multiple SRS resources, and the first The transmission beam indication information of the uplink signal only indicates the target transmission beam of one of the SRS resources, and the transmission beams of other SRS resources and the transmission beam indication information of the first uplink signal indicate that the transmission beams of the SRS resource of the transmission beam have a corresponding relationship. , The transmission beam of the other SRS resource can be determined according to the corresponding relationship.

In the embodiment of the present invention, the indication information indication of the first uplink signal is trigger information of the first uplink signal. Specifically, for aperiodic uplink signals, the indication information of the first uplink signal may be specific trigger information. For example, for SRS resources, the indication information of the first uplink signal may be trigger information of the SRS resource, that is, the SRS resource triggered by the trigger information is the first uplink signal. For periodic or semi-persistent uplink signals, the embodiment of the present invention may also use special indication information (that is, the indicator information of the first uplink signal) to indicate the specific periodic or semi-persistent signal. A semi-persistent signal indicates that the period of the signal can be adjusted semi-statically, for example, the period of the signal is adjusted as needed, and the signal is sent periodically between two period adjustments.

In the embodiment of the present invention, in the foregoing step 31 or 41, in addition to carrying the indication information of the transmission beam of the first uplink signal in the physical layer signaling, the indication information of the transmission beam of other uplink signals may also be carried. Specifically, the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and second beam indication information used to indicate the transmission beam of the second uplink signal. Optionally, the physical layer signaling may also carry first signal indication information for indicating the first uplink signal and/or second signal indication information for indicating the second uplink signal.

Some possible indication methods for indicating the first signal indication information of the first uplink signal include: the index of the reference signal resource corresponding to the first signal, or the identifier of the reference signal corresponding to the first signal, and so on. For example, the first signal is an SRS signal, the first signal indication information is SRS resource indication information indicating one of the SRS resources from an SRS resource set, and the first signal indicated by the first signal indication signal is indicated by the SRS resource indication information One or more SRS corresponding to the SRS resource. For another example, the first signal is an SRS signal, the first signal indicating information is SRS resource set indicating information indicating one of the SRS resource sets from a plurality of SRS resource sets, and the first signal indicated by the first signal indicating signal is the SRS resource One or more SRSs corresponding to the SRS resources included in the SRS resource set indicated by the set indication information.

Furthermore, the physical layer signaling may also carry third beam indication information for indicating the transmission beam of the third uplink signal, and even fourth beam indication information for indicating the transmission beam of the fourth uplink signal. For example, the first uplink signal may be SRS, the second uplink signal is a signal transmitted on PUSCH, and the third uplink signal is a signal transmitted on PUCCH, or the first uplink signal is SRS and the second uplink signal is transmitted on PUSCH. One signal, and the third uplink signal is another signal transmitted on the PUSCH.

In addition, as an implementation manner, the physical layer signaling may only include the indication information of the transmission beam. In this case, the specific uplink signal may be indicated by other signaling, or agreed in advance through related protocols/standards. As another implementation manner, the physical layer signaling may only indicate the indication information of the uplink signal, and the transmission beam of the uplink signal may be indicated by other signaling, or agreed in advance by a related protocol/standard. As yet another implementation manner, the physical layer signaling may include not only the indication information of the transmission beam, but also the indication information of the uplink signal. Here, it should be noted that the transmission beam indication information of the first uplink signal and the transmission beam indication information of the second uplink signal can be sent in the same physical signaling, or can be sent in two physical layer signalings. The present invention There is no specific restriction on this.

As an optional implementation manner, the first uplink signal may be SRS or PUCCH, or PUSCH, and the second uplink signal may include at least one of SRS, a signal transmitted on PUSCH, and a signal transmitted on PUCCH. For example, the first uplink signal is SRS, and the second uplink signal is PUSCH. For example, the first uplink signal is an SRS corresponding to the PUSCH and used for uplink CSI acquisition, and the second uplink signal is the PUSCH. Taking the transmission mode of PUSCH based on codebook uplink transmission as an example, according to the 3GPP agreement, the parameter txConfig in the high-level parameter PUSCH-Config is configured as'codebook' (when the PUSCH is not codebook uplink transmission, it is configured as' nonCodebook'), the first uplink signal is the SRS signal corresponding to the SRS resource included in the SRS resource set whose usage in the high-level parameter SRS-ResourceSet is configured as'codebook' (or'nonCodebook'). Of course, when the second signal is PUSCH, the first signal can also be an SRS used for beam management, for example, an SRS in which the usage in the high-level parameter SRS-ResourceSet is configured as'codebook' (or'nonCodebook') The SRS signal corresponding to the SRS resource included in the resource set.

Optionally, the first uplink signal is SRS, and the second uplink signal is PUCCH.

When the physical layer signaling carries the first beam indicator information and the second beam indicator information, as an optional implementation, the first beam indicator information and the second beam indicator information can be combined through a combination of the physical layer signaling The coding domain is indicated at the same time, and the value of the joint coding domain is obtained by joint coding based on the first beam indication information and the second beam indication information. The parameters obtained by joint coding can indicate the first beam indication information and the second beam indication information at the same time.

When the physical layer signaling carries the first beam indicator information and the second beam indicator information, as another optional implementation, the first beam indicator information and the second beam indicator information are independent of the physical layer signaling. The information fields are indicated separately.

As an optional implementation manner, the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time, wherein the physical layer signaling includes a first information field, and the first information The field is used to indicate the first beam indication information, and there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the third uplink signal. For example, when it is necessary to indicate the transmission beams of SRS and PUSCH, the transmission beam of SRS can be indicated in the first information field. At this time, the transmission beam of PUSCH can be derived from the transmission beam of SRS and the mapping relationship. For another example, when the transmission beams of SRS and PUSCH need to be indicated, the transmission beam of PUSCH can be indicated in the first information field. At this time, the transmission beam of SRS can be derived from the transmission beam of PUSCH and the mapping relationship. Specifically, which signal transmission beam is indicated in the first information domain can be selected according to a predetermined strategy. For example, in some scenarios, the SRS transmission beam is indicated in the first information domain, and in other scenarios, it is indicated in the first information domain. The PUSCH transmission beam is indicated in the first information field. Of course, the embodiment of the present invention may also always use the first information domain to indicate the transmission beam of the SRS when it is necessary to indicate the transmission beams of the SRS and PUSCH, or always use the first information domain to indicate the transmission beam of the PUSCH.

Optionally, the first uplink signal and the second uplink signal are respectively one of signals transmitted on SRS and PUSCH. For example, the first uplink signal is SRS and the second uplink signal is a signal transmitted on PUSCH, or the first uplink signal is a signal transmitted on PUSCH, and the second uplink signal is SRS.

Optionally, in the embodiment of the present invention, when the first uplink signal in the above step 31 or 41 includes a signal transmitted on the PUSCH, the physical layer signaling may also include an indication of the SRS resource set corresponding to the PUSCH Information. For example, when multiple SRS resource sets are allowed to be configured for PUSCH, the indication of SRS resource sets can be performed in the above-mentioned manner. Here, the indication information of the SRS resource set corresponding to the PUSCH implicitly indicates the transmission beam. On the terminal side, the terminal can use the indication information of the above-mentioned SRS resource set to determine the transmission beam.

Optionally, in the embodiment of the present invention, when the first uplink signal in the above step 31 or 41 includes a signal transmitted on the PUSCH, the transmission beam indication information may include the SRS transmission indication information corresponding to the PUSCH. The indication information of the SRS transmission corresponding to the PUSCH can be used to instruct the terminal to send the beam.

Here, the SRS transmission indication information corresponding to the PUSCH may include N values, and each value corresponds to one SRS transmission of the SRS resource for the last N times before the DCI transmission time. In this way, the specific SRS transmission referenced by the sending beam can be determined according to the foregoing corresponding relationship.

Optionally, in the transmitting beam indication method of the embodiment of the present invention, the base station may also instruct the terminal to transmit the first uplink signal. Here, the base station may instruct the terminal to send the first uplink signal before the above step 31 or 41, and the base station may also instruct the terminal to send the first uplink signal after the above step 31 or 41. Of course, the base station also In the foregoing step 31 or 41, the terminal may be further instructed to send the first uplink signal. After the above step 31 or 41, the base station may receive the first uplink signal by using the receiving beam corresponding to the transmitting beam indication information.

Optionally, there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the second uplink signal, and the physical layer signaling includes a first information field, and the first information field is used to indicate the In the case of the first beam indication information, in the beam indication method according to the embodiment of the present invention, the base station may also instruct the terminal to send the first uplink signal and the second uplink signal. The instruction can be performed before or after step 31 or 41, or in step 31 or 41 together. After the above step 31 or 41, the base station may determine the receiving beams of the first uplink signal and the second uplink signal according to the transmission beam indicated by the first information domain and the mapping relationship, and use the receiving beam to receive the first uplink signal And the second uplink signal.

The above describes the transmitting beam indication method of the embodiment of the present invention from the base station side. The following further describes the embodiments of the present invention from the terminal side.

As shown in FIG. 5, the method for indicating beam transmission provided by the embodiment of the present invention, when applied to the terminal side, includes: step 51 and step 52.

Step 51: Receive signaling information dynamically sent by the base station, where the signaling information includes transmission beam indication information for indicating the transmission beam of the first uplink signal.

Here, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH. The signaling information may specifically be physical layer signaling, such as DCI.

Step 52: Determine the transmission beam of the first uplink signal according to the signaling information.

Through the above steps, the terminal of the embodiment of the present invention can receive the transmission beam of the first uplink signal dynamically indicated by the base station without having to obtain the static or semi-static base station through high-level signaling (such as RRC (Radio Resource Control) messages). The configuration of the transmission beam of signals such as SRS or PUCCH can reduce the delay required for transmission beam adjustment, improve system performance, and improve the performance of analog beamforming in delay-sensitive application scenarios.

As shown in FIG. 6, the method for indicating the transmission beam provided by the embodiment of the present invention, when applied to the terminal side, includes:

Step 61: Receive signaling information dynamically sent by the base station, where the signaling information includes transmission beam indication information for indicating the transmission beam of the first uplink signal.

Here, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate the index of one or more reference signals from a plurality of candidate reference signals, and the candidate reference signal includes the first A reference signal other than the reference signal, where the first reference signal is a reference signal corresponding to an uplink reference signal resource configured by the base station for the terminal and used for the uplink reference signal resource acquired by the channel state information CSI in the uplink transmission mode corresponding to the PUSCH. The signaling information may specifically be physical layer signaling, such as DCI.

Optionally, the candidate reference signal includes the first reference signal, and a reference signal other than the first reference signal.

Optionally, the candidate reference signal only includes reference signals other than the first reference signal.

Step 62: Determine the transmission beam of the first uplink signal according to the signaling information.

Through the above steps, when acquiring the transmission beam corresponding to the PUSCH, the terminal of the embodiment of the present invention can select a target reference signal from candidate reference signals including other reference signals other than the first reference signal, to indicate the first reference signal Transmit beam. Compared with the implementation of selecting only the target reference signal from the first reference signal, the embodiment of the present invention can expand the selection range of uplink beamforming, increase the flexibility of uplink beamforming, and improve the efficiency of beam adjustment, so that Improve the performance of the communication system and enhance the stability of uplink transmission in scenarios such as terminal movement, rotation or blocking.

For example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource set in which the high-level signaling usage is configured as'codebook' For the SRS signal corresponding to the SRS resource within, using the method of this embodiment, the base station can indicate another SRS signal to the terminal through the signaling information, and the terminal determines the PUSCH transmission beam according to the SRS signal indicated by the signaling information. It is not necessary to determine the PUSCH transmission beam according to the beam of the SRS signal corresponding to the SRS resource in the SRS resource set whose usage is configured as the'codebook'.

For another example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource with a high-level signaling usage configured as a'codebook' The set contains two SRS resources {SRS 1, SRS 2}. The base station instructs the terminal to use SRS 1 to determine the PUSCH precoding matrix. Using the method of this embodiment, the base station can indicate to the terminal that SRS 2 corresponds to The SRS signal of SRS enables the terminal to determine the transmission beam of the PUSCH according to the SRS signal corresponding to SRS 2. After receiving the signaling information, the terminal determines the PUSCH transmission beam according to the beam of the SRS signal corresponding to SRS 2

That is, the embodiment of the present invention does not exclude that when the first uplink signal is a PUSCH signal in a codebook-based transmission mode, the base station uses the signaling information to indicate to the terminal that the high-level signaling usage is configured as the SRS of the'codebook' The SRS signal corresponding to the SRS resource in the resource set enables the terminal to determine the PUSCH transmission beam scheme according to the beam of the SRS signal.

Of course, the present invention is also applicable to scenarios where the first signal is a PUSCH other than a codebook or PUSCH in other transmission modes.

In the process shown in FIG. 5, the first uplink signal includes at least one of SRS and PUCCH signals. In the process shown in FIG. 6, the first uplink signal refers to the signal on the PUSCH. That is, in the embodiment of the present invention, the first uplink signal may have different content in different scenarios. The content introduced in the following, unless otherwise specified, will be applicable to the application scenarios of FIG. 5 and FIG. 6.

In the embodiment of the present invention, the signaling information dynamically transmitted in step 51 or 61 includes the transmission beam indication information, and the transmission beam indication information is used to indicate the transmission beam of the first uplink signal. Specifically, the transmission beam indication information includes At least one of the following information: the reference signal index of one or more reference signals in the multiple candidate reference signals; the reference signal identifier of one or more reference signals in the multiple candidate reference signals; the reference signal identifier of one or more reference signals in the multiple candidate reference signals; The index of one or more transmit beams.

In the embodiment of the present invention, the transmission beam indication information may be carried in the physical layer signaling.

In the embodiment of the present invention, in the above step 51 or 61, the transmission beam indication information is used to indicate the transmission beam of the first uplink signal, and may specifically include the indication information of the transmission beam of the first uplink signal. In some scenarios, the transmission beam indication information may also be used to indicate the transmission beams of other uplink signals. In this case, the transmission beam indication information may also include the indication information of the transmission beams of other uplink signals.

In the embodiment of the present invention, the transmission beam of the first uplink signal may be explicitly indicated by a predetermined field in the physical layer signaling. The predetermined domain here can be pre-defined by relevant standards, or pre-appointed by the base station and the terminal.

In the above step 51 or 61, the terminal receives the physical layer signaling to determine the transmission beam of the first uplink signal indicated by the base station. The physical layer signaling carries the indication information of the first uplink signal and the first uplink signal. Indication information of the transmission beam of the uplink signal. Here, the physical layer signaling includes not only the indication information of the transmission beam of the first uplink signal, but also the indication information of the first uplink signal to indicate a specific first uplink signal.

As an implementation manner, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are respectively indicated through two independent fields in the physical layer signaling. At this time, in the foregoing step 52 or 62, the terminal may obtain the first uplink signal and the transmission beam of the first uplink signal from two independent fields in the physical layer signaling, respectively.

As another implementation manner, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are indicated by the same field in the physical layer signaling. At this time, in the foregoing step 52 or 62, the terminal may obtain the first uplink signal and the transmission beam of the first uplink signal from the same domain in the physical layer signaling.

Here, the two independent domains or the same domain may be pre-defined by relevant standards, or pre-appointed by the base station and the terminal.

In the embodiment of the present invention, the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the indication information of the transmission beam of the first uplink signal may have a pre-configured correspondence relationship. Here, the corresponding relationship may be pre-configured by the base station to the terminal through high-level signaling, or may be agreed upon in related standards/protocols.

When there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the transmission beam indication information of the first uplink signal, the physical layer signaling carries There are the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal. Specifically, it may carry one of the above two kinds of indication information, and the other indication information may be carried implicitly. That is, in the foregoing step 52 or 62, the terminal may determine the foregoing other instruction information through one kind of indication information carried by the physical layer signaling and the foregoing corresponding relationship.

For example, in the same domain in the physical layer signaling, the first uplink signal indicated by the indication information of the first uplink signal is the same as the first uplink signal indicated by the transmission beam indication information of the first uplink signal in the same domain There is a pre-configured correspondence between the transmission beams; at this time, in the above step 52 or 62, the terminal can obtain the first uplink signal and the first uplink signal from the same domain listed in the physical layer signaling One of the transmitted beams; and then according to the pre-configured correspondence relationship, the other corresponding to the aforementioned one is determined.

When there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the transmission beam indication information of the first uplink signal, if the physical layer signaling is used The same field indicates the above two indication information. A specific implementation may be: each value of the same field indicates a first uplink signal, and the first uplink signals indicated by different values may be the same or different, and , There is a pre-configured correspondence between each value and the indication information of the transmission beam of the first uplink signal. In this case, the same value can indicate the same uplink signal, but different uplink transmission beams are used, so that the terminal can be dynamically instructed to use different transmission beams to send the same uplink signal, such as SRS resources. This implementation can make the base station do not need to change the uplink signal (such as SRS resource) when switching the uplink analog beamforming, so it can allow the base station to configure a smaller number of SRS resources, thereby simplifying the cell planning of the network.

In the embodiment of the present invention, the indication information of the transmission beam of the first uplink signal may indicate one or more target transmission beams. As an implementation manner, when the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam, in the foregoing step 52 or 62, the terminal may determine the target transmission beam as all the target transmission beams contained in the first uplink signal. The transmission beam of the uplink signal. As another implementation manner, the target transmission beam indicated by the indication information of the transmission beam of the first uplink signal has a corresponding relationship with the transmission beams of all the signals contained in the first uplink signal. In this case, in step 52 or In 62, the terminal may determine the target transmission beam corresponding to each signal included in the first uplink signal according to the target transmission beam and the corresponding relationship. The corresponding relationship here may be agreed in the relevant standards/protocols, or may be determined by the base station and the terminal through interaction in advance.

In the embodiment of the present invention, the indication information indication of the first uplink signal is trigger information of the first uplink signal. Specifically, for aperiodic uplink signals, the indication information of the first uplink signal may be specific trigger information. For example, for SRS resources, the indication information of the first uplink signal may be trigger information of the SRS resource, that is, the SRS resource triggered by the trigger information is the first uplink signal. For periodic or semi-persistent uplink signals, the embodiment of the present invention may also use special indication information (that is, the indicator information of the first uplink signal) to indicate the specific periodic or semi-persistent signal.

In the embodiment of the present invention, in the above step 51 or 61, in addition to the indication information of the transmission beam of the first uplink signal carried in the physical layer signaling, the indication information of the transmission beam of other uplink signals may also be carried. Specifically, the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and second beam indication information used to indicate the transmission beam of the second uplink signal. Optionally, the physical layer signaling may also carry first signal indication information for indicating the first uplink signal and/or second signal indication information for indicating the second uplink signal.

Furthermore, the physical layer signaling may also carry the third beam indication information of the transmission beam of the third uplink signal, and even the fourth beam indication information of the transmission beam of the fourth uplink signal. For example, the first uplink signal may be SRS, the second uplink signal is a signal transmitted on PUSCH, and the third uplink signal is a signal transmitted on PUCCH, or the first uplink signal is SRS and the second uplink signal is transmitted on PUSCH. One signal, the third signal is another signal transmitted on PUSCH.

In addition, as an implementation manner, the physical layer signaling may only include the indication information of the transmission beam. In this case, the specific uplink signal may be indicated by other signaling, or agreed in advance through related protocols/standards. As another implementation manner, the physical layer signaling may only indicate the uplink signal information, and the transmission beam of the uplink signal may be indicated by other signaling, or agreed in advance by related protocols/standards. As yet another implementation manner, the physical layer signaling may include not only the indication information of the transmission beam, but also the indication information of the uplink signal. Here, it should be noted that the transmission beam indication information of the first uplink signal and the transmission beam indication information of the second uplink signal can be sent in the same physical signaling, or can be sent in two physical layer signalings. The present invention There is no specific restriction on this.

As an optional implementation manner, the first uplink signal may be SRS or PUCCH, or PUSCH, and the second uplink signal may include at least one of SRS, a signal transmitted on PUSCH, and a signal transmitted on PUCCH.

When the physical layer signaling carries the first beam indicator information and the second beam indicator information, as an optional implementation, the first beam indicator information and the second beam indicator information can be combined through a combination of the physical layer signaling The coding domain is indicated at the same time, and the value of the joint coding domain is obtained by joint coding based on the first beam indication information and the second beam indication information. The parameters obtained by joint coding can indicate the first beam indication information and the second beam indication information at the same time. At this time, in the above step 52 or 62, the terminal may obtain the first beam indication information and the second beam indication information from the joint coding domain in the physical layer signaling to obtain the transmission beam of the first uplink signal. And the transmission beam of the second uplink signal.

When the physical layer signaling carries the first beam indicator information and the second beam indicator information, as another optional implementation, the first beam indicator information and the second beam indicator information are independent of the physical layer signaling. The information fields are indicated separately. At this time, in the above step 52 or 62, the terminal can obtain the first beam indicator information and the second beam indicator information from the two independent information fields in the physical layer signaling, respectively, to obtain the first uplink signal The transmit beam of the second uplink signal and the transmit beam of the second uplink signal.

As an optional implementation manner, the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time; the physical layer signaling includes a first information field, and the first information field uses In order to indicate the first beam indication information, there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the third uplink signal. At this time, in the above step 52 or 62, the terminal can obtain the transmission beam of the first uplink signal from the first information field in the physical layer signaling; after receiving the signaling information dynamically sent by the base station, The terminal may determine the transmission beam of the third uplink signal corresponding to the transmission beam of the first uplink signal according to the transmission beam of the first uplink signal and the mapping relationship.

Optionally, the first uplink signal and the second uplink signal are respectively one of signals transmitted on SRS and PUSCH. For example, the first uplink signal is SRS and the second uplink signal is a signal transmitted on PUSCH, or the first uplink signal is a signal transmitted on PUSCH, and the second uplink signal is SRS.

Optionally, in the embodiment of the present invention, when the first uplink signal in step 51 or 61 above includes a signal transmitted on the PUSCH, the physical layer signaling may also include an indication of the SRS resource set corresponding to the PUSCH Information. For example, when multiple SRS resource sets are allowed to be configured for PUSCH, the indication of SRS resource sets can be performed in the above-mentioned manner. Here, the indication information of the SRS resource set corresponding to the PUSCH implicitly indicates the transmission beam. In this step 52 or 62, the terminal determines the SRS resource set corresponding to the PUSCH according to the indication information of the SRS resource set corresponding to the PUSCH, and uses the determined SRS resource set to determine the transmission of the first uplink signal Beam.

Optionally, in the embodiment of the present invention, when the first uplink signal in the above step 51 or 61 includes a signal transmitted on the PUSCH, the transmit beam indication information may include the SRS transmission indication information corresponding to the PUSCH. The indication information of the SRS transmission corresponding to the PUSCH can be used to instruct the terminal to send the beam.

Here, the SRS transmission indication information corresponding to the PUSCH may include N values, and each value corresponds to one SRS transmission of the SRS resource for the last N times before the DCI transmission time. In this way, in this step 52 or 62, the terminal can determine the SRS transmission corresponding to the value according to the value of the indication information of the SRS transmission; according to the determined transmission beam used for the SRS transmission, determine the transmission beam on the PUSCH The transmission beam of the signal.

Optionally, in the transmitting beam instruction method of the embodiment of the present invention, the terminal may also receive instruction information sent by the base station for instructing the terminal to transmit the first uplink signal; the instruction information may be before or after step 51 or 61 , Or indicate in step 51 or 61 together. In this way, after the foregoing step 52 or 62, the terminal may use the determined transmission beam of the first uplink signal to send the first uplink signal.

Optionally, in the method for transmitting beam instructions in the embodiment of the present invention, the terminal may also receive instruction information sent by the base station for instructing the terminal to transmit the first uplink signal and the third uplink signal; After the transmission beam of the third uplink transmission signal, the terminal may use the determined transmission beams of the first uplink signal and the third uplink transmission signal to transmit the first uplink signal and the third uplink signal.

The method for indicating the transmission beam in the embodiment of the present invention has been described above. The following will further describe in combination with specific embodiments.

In the following embodiments, the first uplink signal and the second uplink signal are SRS and PUSCH, respectively. It should be pointed out that the foregoing specific signals are only examples for illustration, and the first uplink signal and the second uplink signal in the embodiment of the present invention may also be other signals such as PUCCH and PUSCH, respectively, which will not be described by examples one by one.

In an embodiment, the number of SRS resources allowed to be configured in the SRS resource set used for CSI acquisition can be expanded from 2 to a larger value. For example, in this way, the bit width of the SRI field in the UL grant needs to be increased accordingly. For example, increase to 3bit. Similar to the design in the 3GPP R15 version, high-level signaling configures a space-related parameter for each SRS resource to indicate the reference signal used to determine the transmission beam of the SRS transmission corresponding to the SRS resource (for example, in the R15 NR system) , Can be configured through "SpatialRelationInfo"). By increasing the number of SRS resources in the SRS resource set used for CSI acquisition, the base station can configure different spatial related parameters for different SRS resources, thereby allowing PUSCH transmission to be selected among more beams. The advantage of this scheme is that the bit width of the SRS trigger field in the SRS trigger and DCI can remain unchanged. More flexible beam selection is achieved by configuring a larger number of SRS resources using different UL Tx beams. The disadvantage of this scheme is that the SRS used for CSI acquisition usually has a larger overhead than the SRS used for beam management. This is because the SRS used for beam management usually requires each resource to support multiple SRS ports to allow multiple input multiple output (MIMO) operations, while the SRS used for beam management usually only requires a single antenna port. . Therefore, increasing the number of SRS resources used for CSI acquisition may increase the SRS overhead.

In another implementation manner, the bit width of the SRS trigger field is increased. For example, in the R15 NR system, the SRS trigger field is indicated by the SRS request field in the DCI, which is 2 bits. Increase the SRS request field from 2 bits to 3 bits. This allows the gNB to trigger the SRS resource set from a maximum of 7 SRS resource sets based on scheduling requirements. In this way, the gNB can select and receive different SRS for different services, thereby providing better flexibility for the configuration of the gNB. Similar to the design of R15 in the related technology, it is used to indicate the spatial parameter used to determine the transmission beam reference of the SRS transmission corresponding to the SRS resource (for convenience, it is represented by SpatialRelationInfo below), which is used for each SRS resource through high-level signaling Configured. For example, when each SRS resource set has only a small number of SRS resources to limit the system overhead, different SRS resources can be configured with different SpatialRelationInfo to achieve flexible beam switching. Compared with the previous embodiment, this approach can achieve the same flexibility of beam switching and scheduling, and at the same time has a smaller system overhead.

In another embodiment, one state that allows the SRS trigger domain can trigger multiple SRS resource sets. If the base station can configure multiple SRS resource sets for the terminal in a certain uplink transmission mode, and different SRS resource sets correspond to different "SpatialRelationInfo", the base station can use these SRS resource sets to perform beam scanning. In this case, an SRS resource set indicator needs to be added to the UL grant to indicate the SRS resource set corresponding to PUSCH transmission. The SRI is the SRS resource indication in the SRS resource set indicated by the SRS resource set indication. Optionally, the SRS resource set indication field reuses the SRI field in the UL grant. When the SRS resource set in a certain uplink transmission mode configured by the base station for the terminal is more than 1, and each SRS resource set contains only one SRS resource, the SRI field is used to indicate the SRS resource set in this transmission mode; The number of SRS resource sets in a certain uplink transmission mode configured by the base station for the terminal is 1, and when multiple SRS resources are included, the SRI field in this transmission mode is used to indicate the SRS resources in the SRS resource set.

In the first optional embodiment of the present invention: 1) the uplink transmission beam of SRS is dynamically and explicitly indicated by signaling; 2) the beam of PUSCH follows the design of Rel15, that is, the uplink transmission beam of PUSCH adopts its scheduling grant (grant The transmission beam of the most recent SRS transmission of the SRS resource corresponding to the SRI indicated in ).

As an implementation of the above-mentioned first optional embodiment, "SpatialRelationInfo" is no longer configured for each SRS resource through RRC signaling, but is dynamically and explicitly configured as an independent control domain in DCI. "SpatialRelationInfo" provides information for the target reference signal to indicate the uplink transmission beam (for example, it indicates that the target reference signal is used to determine the reference signal CSI-RS/SSB/SRS of the uplink transmission beam). In this way, the uplink transmission beam can be dynamically and explicitly indicated. In general, SRS triggering is allowed to include two independent domains, for example, an SRS trigger domain and a UL Tx beam indicator domain. The SRS trigger field indicates the triggered SRS resource or SRS resource set, and the UL Tx beam indicator field (for example, the SpatialRelationInfo indicator field) is used to indicate the triggered SRS resource or the uplink transmission beam of the SRS resource set.

Optionally, "SpatialRelationInfo" is indicated by the SRS trigger field. The trigger status of the SRS resource/SRS resource set contains the "SpatialRelationInfo" information of the SRS resource. The "SpatialRelationInfo" information of the SRS resource triggered by the trigger status of the SRS resource/SRS resource set can be configured through RRC signaling. For example, SRS trigger state 0 and SRS trigger state 1 in the SRS trigger domain in DCI both trigger SRS resource 0, RRC signaling can configure the SpatialRelationInfo information of SRS resource 0 triggered by SRS trigger state 0 to SpatialRelationInfo 1, which is determined by The SpatialRelationInfo information of the SRS resource 0 triggered by the SRS trigger state 2 is SpatialRelationInfo 2. Then, through different SRS trigger states in the DCI, the UE can be dynamically instructed to use different SpatialRelationInfo to send the same SRS resource.

The advantage of this scheme is that it allows the gNB to switch the uplink analog beamforming without changing the SRS resources. Therefore, it allows the base station to configure fewer SRS resources. This can simplify the community planning of the network.

The bit width of "SpatialRelationInfo" can be selected based on the balance between sufficient beam change flexibility and DCI overhead. For example, 3 bits can be used, which allows beam selection from 8 candidate UL Tx beams.

Note that different trigger states of an SRS resource set containing multiple SRS resources may trigger different numbers of SRS resources. At this time, it is necessary to determine how the beam indicated by the "SpatialRelationInfo" field is applied to different numbers of SRS resources.

Optionally, each "SpatialRelationInfo" only indicates one beam (for example, indicates a reference CSI-RS/SSB/SRS), and this beam is used for all triggered SRS resources.

Optionally, each "SpatialRelationInfo" indicates a group of beams (for example, indicates multiple reference CSI-RS/SSB/SRS). The beam corresponding to a "SpatialRelationInfo" indicating state can be fixed or pre-configured. How the indicated beam is used for the triggered SRS resource may be a predefined way. For example, the simplest way is that the beam indicated by "SpatialRelationInfo" has a one-to-one mapping relationship with the SRS resource triggered by the SRS trigger state.

In the second optional embodiment of the present invention: 1) SRS and PUSCH transmission beams are both dynamically and explicitly indicated through signaling; 2) SRS and PUSCH beams are independently indicated.

As a derivative of the second optional embodiment, the transmission beams of SRS and PUSCH are jointly indicated, and the same indicated beam is used for both SRS and PUSCH; or, one indicated beam is used for SRS (or PUSCH), A second beam that has a predefined relationship with the indicator beam is used for PUSCH (or SRS))

As an implementation of the above-mentioned second optional embodiment, SRS and PUSCH are respectively defined with different "SpatialRelationInfo" signaling domains. Specifically, UL grant: The UL grant includes a "SpatialRelationInfo" field for SRS and a "SpatialRelationInfo" field for PUSCH. Note that they can have different bit widths; DL grant: Include a field in the DL grant. In the "SpatialRelationInfo" field of SRS; the above implementation scheme follows the situation where there are "SpatialRelationInfo" fields in SRS and PUSCH respectively.

Optionally, the "SpatialRelationInfo" of SRS and the "SpatialRelationInfo" of PUSCH are jointly coded in the UL grant, and the parameters of the joint coding can indicate the "SpatialRelationInfo" of SRS and "SpatialRelationInfo" of PUSCH at the same time.

Optionally, there is a mapping relationship between the UL Tx beam of the PUSCH and the transmission beam of the SRS. The DCI contains a "SpatialRelationInfo" indication, according to the "SpatialRelationInfo" the transmission beams of SRS and PUSCH can be determined. For example, the "SpatialRelationInfo" in the DCI indicates the uplink transmission beam of the SRS, and the UE can obtain the uplink transmission beam of the PUSCH based on the mapping relationship between the UL Tx beam of the PUSCH and the transmission beam of the SRS according to the transmission beam of the SRS. Optionally, the "SpatialRelationInfo" in the DCI indicates the uplink transmission beam of the PUSCH, and the UE may obtain the uplink transmission beam of the SRS according to the PUSCH transmission beam based on the mapping relationship between the UL Tx beam of the PUSCH and the transmission beam of the SRS. The mapping relationship may be fixed, or pre-defined, or predetermined in advance by the base station and the terminal. Optionally, the uplink transmission beam indicated by "SpatialRelationInfo" in the DCI is used for SRS and PUSCH at the same time.

Optionally, a method for determining the transmission beam of the uplink signal corresponding to "SpatialRelationInfo" according to "SpatialRelationInfo" and transmitting the uplink signal is: "SpatialRelationInfo" indicates a reference signal, if the reference signal is an uplink reference signal ( For example, SRS), the terminal uses the same Spatial Domain filter when sending the reference signal to send the uplink signal; if the reference signal is a downlink signal (for example, SSB or CSI-RS), the terminal uses the reference signal to receive the reference The same Spatial Domain filter as the Spatial Domain filter at the time of the signal sends the uplink signal.

In the third optional embodiment of the present invention: 1) SRS and PUSCH transmission beams are both dynamically and explicitly indicated through signaling; 2) SRS used to provide a reference for PUSCH uplink transmission beams is dynamically indicated (e.g. , Not always based on the most recently transmitted SRS).

As a specific implementation of the third optional embodiment, the base station sends an SRS transmission indication information in the UL grant, and the SRS transmission indication information is used to indicate the SRS transmission corresponding to the PUSCH transmission beam. For example, it is still shown in Figure 1. Assuming that the PUSCH is an uplink transmission based on a codebook, the base station configures an SRS resource set for the uplink transmission based on the codebook, including two SRS resources: SRS resource 0 and SRS resource 1. The time t1,..., t6 in the figure represents the start time of data transmission. If the base station sends a PDCCH carrying UL grant DCI to the terminal at time t5, and the SRI indicates SRS resource 0, the PUSCH is scheduled to start transmission at time t6. Then, the SRS transmission instruction information is used to indicate that the PUSCH transmission beam is determined according to the SRS transmission beam sent in SRS resource 0 at time t1, or whether the PUSCH transmission beam is determined according to the SRS transmission beam sent in SRS resource 0 at time t3.

An encoding method of SRS transmission indication information is: SRS transmission indication information includes N states, one of which indicates one SRS transmission on the SRS resource indicated by the SRI. Taking N=4 as an example, the coding method in Table 1 can be used:

The foregoing describes the transmission beam indication method of the embodiment of the present invention. Compared with the semi-static beam indication scheme, the embodiment of the present invention can improve scheduling flexibility, beam adjustment efficiency, system performance, UE movement, rotation, blocking, etc. The stability of the uplink transmission.

Based on the above method, the embodiment of the present invention also provides a device for implementing the above method.

Please refer to FIG. 7, an embodiment of the present invention provides a schematic structural diagram of a base station 700, including: a processor 701, a transceiver 702, a memory 703, and a bus interface. In the embodiment of the present invention, the base station 700 also Including: a computer program stored in the memory 703 and running on the processor 701.

The processor 701 is configured to dynamically indicate the transmission beam of the first uplink signal to the terminal by transmitting beam instruction information.

Here, corresponding to the process shown in FIG. 3, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH.

Here, corresponding to the process shown in FIG. 4, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from multiple candidate reference signals, The candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is configured by the base station for the terminal and used for the uplink reference signal resource acquired by the channel status information CSI in the uplink transmission mode corresponding to the PUSCH. The corresponding reference signal.

Optionally, the candidate reference signal includes the first reference signal, and a reference signal other than the first reference signal.

Optionally, the candidate reference signal only includes reference signals other than the first reference signal.

For example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource set in which the high-level signaling usage is configured as'codebook' The SRS signal corresponding to the SRS resource in the internal SRS resource, using the method of this embodiment, the base station can indicate another SRS signal to the terminal through the transmission beam indication information, and the terminal determines the PUSCH transmission according to the SRS signal indicated by the transmission beam indication information Beam, instead of having to determine the PUSCH transmission beam according to the beam of the SRS signal corresponding to the SRS resource in the SRS resource set whose usage is configured as the'codebook'.

For another example, the first uplink signal is a PUSCH signal in a codebook-based transmission mode, and the uplink reference signal used for CSI acquisition of the first uplink signal is an SRS resource with a high-level signaling usage configured as a'codebook' The set contains two SRS resources {SRS 1, SRS 2}. The base station instructs the terminal to use SRS 1 to determine the PUSCH precoding matrix. Using the method of this embodiment, the base station can indicate SRS 2 to the terminal through the transmission beam indication information. The corresponding SRS signal enables the terminal to determine the transmission beam of the PUSCH according to the beam of the SRS signal corresponding to SRS 2.

That is, the embodiment of the present invention does not exclude that when the first uplink signal is a PUSCH signal in a codebook-based transmission mode, the base station indicates to the terminal that the high-level signaling usage is configured as'codebook' through the transmission beam indication information The SRS signal corresponding to the SRS resource in the SRS resource set enables the terminal to determine the PUSCH transmission beam scheme according to the beam of the SRS signal.

Of course, the present invention is also applicable to scenarios where the first signal is a PUSCH other than a codebook or PUSCH in other transmission modes.

In FIG. 7, the bus structure may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 703 are connected together. The bus bar architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are all known in the art, and therefore, no further description will be given here. The bus interface provides an interface. The transceiver 702 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.

The processor 701 is responsible for managing the bus architecture and general processing, and the memory 703 can store data used by the processor 701 when performing operations.

Optionally, the transmitted beam indication information includes at least one of the following information: a reference signal index of one or more reference signals among a plurality of candidate reference signals; a reference of one or more reference signals among a plurality of candidate reference signals Signal identifier; the index of one or more transmit beams among multiple candidate transmit beams.

Optionally, the transmission beam indication information is carried in physical layer signaling.

Optionally, the transmission beam of the first uplink signal is explicitly indicated by a predetermined field in the physical layer signaling.

Optionally, the processor 701 is further configured to indicate the transmission beam of the first uplink signal to the terminal through physical layer signaling, and the physical layer signaling carries indication information of the first uplink signal and the first uplink signal. Indication information of the transmission beam of the signal.

Optionally, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are respectively indicated by two independent fields in the physical layer signaling.

Optionally, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are indicated by the same field in the physical layer signaling.

Optionally, there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the indication information of the transmission beam of the first uplink signal.

Optionally, the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam, and the target transmission beam is used for all signals indicated by the indication information of the first uplink signal.

Optionally, there is a correspondence between the target transmission beam indicated by the indication information of the transmission beam of the first uplink signal and the transmission beams of all signals included in the first uplink signal.

Optionally, the indication information of the first uplink signal indicates trigger information of the first uplink signal.

Optionally, the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and second beam indication information used to indicate the transmission beam of the second uplink signal.

Optionally, the second uplink signal includes at least one of SRS, a signal transmitted on PUSCH, and a signal transmitted on PUCCH.

Optionally, the physical layer signaling further carries: first signal indication information used to indicate the first uplink signal.

Optionally, the first beam indicator information and the second beam indicator information are simultaneously indicated by a joint coding field in the physical layer signaling, and the value of the joint coding field is based on the first beam indicator information and the second beam The indication information is obtained by joint coding; or, the first beam indication information and the second beam indication information are separately indicated by two independent information fields in the physical layer signaling.

Optionally, the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time; wherein, the physical layer signaling includes a first information field, and the first information field is used for Indicate the first beam indication information, and there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the third uplink signal.

Optionally, the first uplink signal and the second uplink signal are respectively one of signals transmitted on SRS and PUSCH.

Optionally, when the first uplink signal includes a signal transmitted on the PUSCH, the physical layer signaling further includes indication information of the SRS resource set corresponding to the PUSCH.

Optionally, when the first uplink signal includes a signal transmitted on the PUSCH, the transmitted beam indication information includes SRS transmission indication information corresponding to the PUSCH.

Optionally, the SRS transmission indication information corresponding to the PUSCH includes N values, and each value corresponds to one SRS transmission of the SRS resource for the last N times before the DCI transmission time.

Optionally, the physical layer signaling is downlink control information DCI.

Optionally, the processor 701 is configured to read the program in the memory and execute the following process: instruct the terminal to send the first uplink signal; where, by sending beam instruction information, the terminal dynamically instructs the sending of the first uplink signal After the beam, the first uplink signal is received by using the receiving beam corresponding to the transmitting beam indication information.

Optionally, the processor 701 is configured to read the program in the memory and execute the following process: instruct the terminal to send the first uplink signal and the third uplink signal; the processor 701 is also used to transmit the beam After the indication information dynamically indicates the transmitting beam of the first uplink signal to the terminal, the receiving beams of the first uplink signal and the third uplink signal are determined according to the beam indication information and the mapping relationship, and the receiving beam is used to receive the first uplink signal And the third uplink signal.

Referring to FIG. 8, an embodiment of the present invention provides another structure of a base station 80. As shown in FIG. 8, the base station 80 includes a transceiver unit 801 for dynamically indicating the first uplink to the terminal by sending beam instruction information. The transmission beam of the signal.

Here, corresponding to the process shown in FIG. 3, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH.

Here, corresponding to the process shown in FIG. 4, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from multiple candidate reference signals, The candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is configured by the base station for the terminal and used for the uplink reference signal resource acquired by the channel status information CSI in the uplink transmission mode corresponding to the PUSCH. The corresponding reference signal.

Please refer to FIG. 9, a schematic structural diagram of a terminal provided by an embodiment of the present invention. The terminal 90 includes a processor 901, a transceiver 902, a memory 903, a user interface 904, and a bus interface. , The terminal 900 also includes: a computer program stored in the memory 903 and running on the processor 901.

The processor 901 is configured to receive signaling information dynamically sent by the base station, the signaling information includes transmission beam indication information used to indicate the transmission beam of the first uplink signal; the processor 901 is configured to read in the memory The program executes the following process: According to the signaling information, the transmission beam of the first uplink signal is determined.

Corresponding to the process of FIG. 5, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH.

Corresponding to the process of FIG. 6, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate the index of one or more reference signals from a plurality of candidate reference signals. The reference signal includes a reference signal other than the first reference signal, and the first reference signal is the uplink reference signal resource configured by the base station for the terminal for the uplink reference signal resource acquired by the channel status information CSI in the uplink transmission mode corresponding to the PUSCH Reference signal.

In FIG. 9, the bus structure may include any number of interconnected bus bars and bridges, specifically one or more processors represented by the processor 901 and various circuits of the memory represented by the memory 903 are connected together. The bus bar architecture can also connect various other circuits such as peripheral devices, voltage regulators, and power management circuits, etc., which are all known in the art, and therefore, no further description will be given here. The bus interface provides an interface. The processor 901 may be a plurality of elements, that is, include a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium. For different user equipment, the user interface 904 can also be an interface that can externally and internally connect the required equipment. The connected equipment includes but is not limited to a keypad, a display, a speaker, a microphone, a joystick, and so on.

The processor 901 is responsible for managing the bus architecture and general processing, and the memory 903 can store data used by the processor 901 when performing operations.

Optionally, the transmitted beam indication information includes at least one of the following information: a reference signal index of one or more reference signals among a plurality of candidate reference signals; a reference of one or more reference signals among a plurality of candidate reference signals Signal identifier; the index of one or more transmit beams among multiple candidate transmit beams.

Optionally, the transmission beam indication information is carried in physical layer signaling.

Optionally, the transmission beam of the first uplink signal is explicitly indicated by a predetermined field in the physical layer signaling.

Optionally, the processor 901 is further configured to receive physical layer signaling and determine the transmission beam of the first uplink signal indicated by the base station. The physical layer signaling carries the indication information of the first uplink signal and the Indication information of the transmission beam of the first uplink signal.

Optionally, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are respectively indicated through two independent fields in the physical layer signaling; the processor 901 is also used for slave The transmission beams of the first uplink signal and the first uplink signal are respectively obtained in two independent domains in the physical layer signaling.

Optionally, the indication information of the first uplink signal and the indication information of the transmission beam of the first uplink signal are indicated by the same field in the physical layer signaling; the processor 901 is further configured to receive the information from the physical layer Acquire the first uplink signal and the transmission beam of the first uplink signal in the same domain in the signaling.

Optionally, there is a pre-configured correspondence between the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the transmission beam indication information of the first uplink signal; the processor 901, It is also used to obtain the transmission beam of the first uplink signal from the physical layer signaling; and determine the first uplink signal corresponding to the transmission beam of the first uplink signal according to the pre-configured correspondence relationship.

For example, in the physical layer signaling, the first uplink signal indicated by the indication information of the first uplink signal in the same domain and the transmission indicated by the indication information of the transmission beam of the first uplink signal in the same domain There is a pre-configured correspondence between the beams; the processor 901 is further configured to obtain one of the first uplink signal and the transmission beam of the first uplink signal from the same domain in the physical layer signaling ; According to the pre-configured correspondence relationship, determine the other corresponding to the aforementioned one.

Optionally, the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam; the processor 901 is further configured to determine the target transmission beam as all the first transmission beams indicated by the indication information of the first uplink signal. The transmission beam of the uplink signal.

Optionally, there is a correspondence between the target transmission beam indicated by the indication information of the transmission beam of the first uplink signal and the transmission beams of all signals included in the first uplink signal; the processor 901 is further configured to The transmission beam and the correspondence relationship are determined, and the target transmission beam corresponding to each signal included in the first uplink signal is determined.

Optionally, the indication information of the first uplink signal indicates trigger information of the first uplink signal.

Optionally, the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and second beam indication information used to indicate the transmission beam of the second uplink signal.

Optionally, the second uplink signal includes at least one of SRS, a signal transmitted on PUSCH, and a signal transmitted on PUCCH.

Optionally, the physical layer signaling further carries: first signal indication information used to indicate the first uplink signal.

Optionally, the first beam indicator information and the second beam indicator information are simultaneously indicated by a joint coding field in the physical layer signaling, and the value of the joint coding field is based on the first beam indicator information and the second beam Indication information obtained by joint coding; the processor 901 is further configured to obtain the first beam indication information and the second beam indication information from the joint coding domain in the physical layer signaling to obtain the first uplink signal The transmission beam and the transmission beam of the second uplink signal.

Optionally, the first beam indicator information and the second beam indicator information are respectively indicated by two independent information fields in the physical layer signaling; the processor 901 is further configured to receive the two information from the physical layer signaling. The first beam indicator information and the second beam indicator information are respectively obtained in two independent information domains to obtain the transmission beam of the first uplink signal and the transmission beam of the second uplink signal.

Optionally, the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time, and the physical layer signaling includes a first information field, and the first information field is used to indicate the The first beam indication information, wherein there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the third uplink signal; the processor 901 is further configured to obtain the first information from the physical layer signaling Domain, acquiring the transmission beam of the first uplink signal; and determining the transmission beam of the third uplink signal according to the transmission beam of the first uplink signal and the mapping relationship.

Optionally, the first uplink signal and the second uplink signal are respectively one of signals transmitted on SRS and PUSCH.

Optionally, when the first uplink signal includes the signal transmitted on the PUSCH, the physical layer signaling further includes indication information of the SRS resource set corresponding to the PUSCH; the processor 901 is further configured to The indication information of the corresponding SRS resource set determines the SRS resource set corresponding to the PUSCH.

Optionally, when the first uplink signal includes a signal transmitted on the PUSCH, the transmitted beam indication information includes SRS transmission indication information corresponding to the PUSCH.

Optionally, the SRS transmission indication information corresponding to the PUSCH includes N values, and each value corresponds to one SRS transmission of the SRS resource for the last N times before the DCI transmission time; the processing The device 901 is further configured to determine the SRS transmission corresponding to the value according to the value of the indication information of the SRS transmission; determine the transmission beam of the signal transmitted on the PUSCH according to the determined transmission beam used for the SRS transmission.

Optionally, the physical layer signaling is downlink control information DCI.

Optionally, the processor 901 is further configured to receive instruction information sent by the base station for instructing the terminal to send the first uplink signal; and, after determining the transmission beam of the first uplink signal, use the determined The transmitting beam of the first uplink signal transmits the first uplink signal.

Optionally, the processor 901 is further configured to receive instruction information sent by the base station for instructing the terminal to send the first uplink signal and the third uplink signal; and, when determining the first uplink signal and the third uplink signal After the signal transmission beam, the determined transmission beams of the first uplink signal and the third uplink transmission signal are used to transmit the first uplink signal and the third uplink signal.

10, the embodiment of the present invention provides another terminal 100, including: a transceiver unit 101 for receiving signaling information dynamically sent by a base station, the signaling information includes a signal used to indicate the transmission beam of the first uplink signal Sending beam indication information; the beam determining unit 102 is configured to determine the sending beam of the first uplink signal according to the signaling information; corresponding to the flow in FIG. 5, the first uplink signal includes a sounding reference signal SRS and a physical uplink control channel At least one of the signals transmitted on the PUCCH.

Corresponding to the process of FIG. 6, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate the index of one or more reference signals from a plurality of candidate reference signals. The reference signal includes a reference signal other than the first reference signal, and the first reference signal is the uplink reference signal resource configured by the base station for the terminal for the uplink reference signal resource acquired by the channel status information CSI in the uplink transmission mode corresponding to the PUSCH Reference signal.

In the embodiment provided by the present invention, it should be understood that the transmission beam described in the solution of the embodiment of the present invention may also correspond to a specific type of transmission beam, for example, only for the analog transmission beam, or for the analog sum Digital hybrid transmission beam, etc. It should be understood that the transmit (receive) beam described in this article may be called transmit (receive) precoding, transmit (receive) beamforming, etc. in some documents, and the present invention should not be limited due to the naming of terms Application and scope.

A person of ordinary skill in the art may be aware that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered as going beyond the scope of the present invention. Electronic hardware may include, but is not limited to, electronic circuits, application specific integrated circuits (ASICs), programmable logic devices, programmable processors, and the like.

Those skilled in the art can clearly understand that, for the convenience and conciseness of description, the specific working process of the above-described system, device, and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments provided by the present invention, it should be understood that the disclosed device and method can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of the aforementioned units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or elements can be combined or integrated. To another system, or some features can be ignored, or not implemented. In addition, the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.

The aforementioned units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments of the present invention.

In addition, the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may exist separately, or two or more units may be integrated into one unit.

If the aforementioned functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solution of the present invention essentially or the part that contributes to the related technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including several The instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the uplink beam indication method of the various embodiments of the present invention. The aforementioned storage media include: flash drives, mobile hard drives, ROMs, RAMs, magnetic disks or optical discs and other media that can store program codes.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention. It should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the patent application.

31‧‧‧Step

Claims (24)

An uplink beam indication method, comprising: a base station dynamically instructs a terminal to transmit beams of a first uplink signal by sending beam indication information; wherein, the first uplink signal includes a sounding reference signal SRS and a signal transmitted on a physical uplink control channel PUCCH Or, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from a plurality of candidate reference signals, the candidate reference signal Contains reference signals other than the first reference signal, and the first reference signal is the reference signal corresponding to the uplink reference signal resource obtained by the base station configured for the terminal for the channel status information CSI in the uplink transmission mode corresponding to the PUSCH Wherein, the step of dynamically indicating the transmission beam of the first uplink signal to the terminal includes: the base station indicates the transmission beam of the first uplink signal to the terminal through physical layer signaling, the physical layer signaling carries the first uplink signal Indication information of an uplink signal and indication information of the transmission beam of the first uplink signal. The uplink beam indication method according to claim 1, wherein the transmission beam indication information is carried in physical layer signaling. The uplink beam indication method according to claim 2, wherein the transmission beam of the first uplink signal is explicitly indicated by a predetermined field in the physical layer signaling. The uplink beam indication method according to claim 1, wherein the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the indication information of the transmission beam of the first uplink signal have a pre-existing relationship. Correspondence of configuration; Or, the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam, and the target transmission beam is used for all signals indicated by the indication information of the first uplink signal; or, the transmission beam of the first uplink signal There is a correspondence between the target transmission beam indicated by the indication information and the transmission beams of all signals included in the first uplink signal. The uplink beam indication method according to claim 2, wherein the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and information used to indicate the second uplink signal Send the second beam indication information of the beam. The uplink beam indication method according to claim 2, wherein the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time, wherein the physical layer signaling includes the first The information field, the first information field is used to indicate the first beam indication information, and the transmission beam of the first uplink signal has a mapping relationship with the transmission beam of the third uplink signal. The uplink beam indication method according to claim 2, wherein, when the first uplink signal includes a signal transmitted on the PUSCH, the physical layer signaling further includes indication information of the SRS resource set corresponding to the PUSCH. The uplink beam indication method according to claim 2, wherein, when the first uplink signal includes a signal transmitted on the PUSCH, the transmitted beam indication information includes SRS transmission indication information corresponding to the PUSCH. The uplink beam indication method according to claim 8, wherein the indication information of the SRS transmission corresponding to the PUSCH includes N values, and each value corresponds to the last N transmissions of the terminal before the DCI transmission time. The SRS resource once SRS transmission. The uplink beam indication method according to claim 1, further comprising: the base station instructs the terminal to send the first uplink signal; after the sending beam indication information dynamically instructs the terminal to send the beam of the first uplink signal, further comprising: The base station receives the first uplink signal by using the receiving beam corresponding to the transmitting beam indication information. The uplink beam indication method according to claim 6, further comprising: the base station instructs the terminal to send the first uplink signal and the third uplink signal; where the transmission beam indication information is used to dynamically indicate the transmission beam of the first uplink signal to the terminal After that, the method further includes: determining the receiving beams of the first uplink signal and the third uplink signal according to the transmission beam indication information and the mapping relationship, and using the receiving beam to receive the first uplink signal and the third uplink signal. An uplink beam indication method, comprising: receiving signaling information dynamically sent by a base station, the signaling information including transmission beam indication information for indicating a transmission beam of a first uplink signal; and determining the first uplink according to the signaling information Signal transmission beam; wherein, the first uplink signal includes at least one of a sounding reference signal SRS and a signal transmitted on the physical uplink control channel PUCCH; or, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, And the transmitted beam indication information is used to indicate the index of one or more reference signals from a plurality of candidate reference signals, and the candidate reference signals include reference signals other than the first reference signal, and the first reference signal The number is the reference signal corresponding to the uplink reference signal resource acquired by the base station for the terminal configured for the channel status information CSI in the uplink transmission mode corresponding to the PUSCH; wherein the step of receiving the signaling information includes: the terminal Receiving physical layer signaling to determine the transmission beam of the first uplink signal indicated by the base station, and the physical layer signaling carries the indication information of the first uplink signal and the transmission beam of the first uplink signal. The uplink beam indication method according to claim 12, wherein the transmission beam indication information is carried in physical layer signaling. The uplink beam indication method according to claim 13, wherein the transmission beam of the first uplink signal is explicitly indicated by a predetermined field in the physical layer signaling. The uplink beam indication method according to claim 13, wherein the first uplink signal indicated by the indication information of the first uplink signal and the transmission beam indicated by the indication information of the transmission beam of the first uplink signal have a pre-existing relationship. The configured correspondence relationship. The step of determining the transmission beam of the first uplink signal indicated by the base station includes: obtaining the transmission beam of the first uplink signal from the physical layer signaling; and according to the pre-configured correspondence, Determine the first uplink signal corresponding to the transmission beam of the first uplink signal; or, if the indication information of the transmission beam of the first uplink signal only indicates one target transmission beam, the first uplink signal is determined according to the signaling information. The step of sending the signal beam includes: determining the target sending beam as the sending beam of all the uplink signals included in the first uplink signal; or, the target sending beam indicated by the indication information of the sending beam of the first uplink signal and the There is a correspondence between the transmission beams of all the signals contained in the first uplink signal, and the step of determining the transmission beam of the first uplink signal according to the signaling information includes: according to the target transmission wave Beam and the corresponding relationship, and determine the target transmission beam corresponding to each signal included in the first uplink signal. The uplink beam indication method according to claim 13, wherein the physical layer signaling carries: first beam indication information used to indicate the transmission beam of the first uplink signal, and information used to indicate the second uplink signal Send the second beam indication information of the beam. The uplink beam indication method according to claim 13, wherein the physical layer signaling indicates the transmission beam of the first uplink signal and the transmission beam of the third uplink signal at the same time, and the physical layer signaling includes the first information field , The first information field is used to indicate the first beam indication information, wherein there is a mapping relationship between the transmission beam of the first uplink signal and the transmission beam of the third uplink signal; and the first information is determined according to the signaling information. The step of sending a beam of an uplink signal includes: acquiring the sending beam of the first uplink signal from the first information field in the physical layer signaling; after receiving the signaling information dynamically sent by the base station, the method It further includes: determining the transmission beam of the third uplink signal according to the transmission beam of the first uplink signal and the mapping relationship. The uplink beam indication method according to claim 13, wherein, when the first uplink signal includes a signal transmitted on the PUSCH, the physical layer signaling further includes indication information of the SRS resource set corresponding to the PUSCH; the method It also includes: determining the SRS resource set corresponding to the PUSCH according to the indication information of the SRS resource set corresponding to the PUSCH. The uplink beam indication method according to claim 13, wherein, when the first uplink signal includes a signal transmitted on the PUSCH, the transmitted beam indication information includes SRS transmission indication information corresponding to the PUSCH. The uplink beam indication method according to claim 19, wherein the indication information of the SRS transmission corresponding to the PUSCH includes N values, and each value corresponds to the last N transmissions of the terminal before the DCI transmission time. One SRS transmission of the SRS resource; the step of determining the transmission beam of the first uplink signal according to the signaling information includes: determining the SRS transmission corresponding to the value according to the value of the indication information of the SRS transmission; Determine the transmission beam used for SRS transmission, and determine the transmission beam of the signal transmitted on the PUSCH. The uplink beam indication method according to claim 12, further comprising: receiving instruction information sent by the base station for instructing the terminal to send the first uplink signal; after determining the transmission beam of the first uplink signal, further comprising: The terminal transmits the first uplink signal by using the determined transmission beam of the first uplink signal. The uplink beam indication method according to claim 17, further comprising: receiving indication information sent by the base station for instructing the terminal to send the first uplink signal and the third uplink signal; after determining the first uplink signal and the third uplink signal After the transmission beam of the signal is sent, the method further includes: the terminal uses the determined transmission beam of the first uplink signal and the third uplink transmission signal to transmit the first uplink signal and the third uplink signal. A communication base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; wherein the processor is used to send beam instruction information to the terminal dynamics To indicate the transmission beam of the first uplink signal; wherein, the first uplink signal includes a sounding reference signal SRS and a physical uplink control channel At least one of the signals transmitted on the PUCCH; or, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one or more reference signals from multiple candidate reference signals , The candidate reference signal includes a reference signal other than the first reference signal, and the first reference signal is an uplink reference signal resource configured by the base station for the terminal for the channel status information CSI in the uplink transmission mode corresponding to the PUSCH Corresponding reference signal; wherein, the processor is configured to: indicate the transmission beam of the first uplink signal to the terminal through physical layer signaling, and the physical layer signaling carries indication information of the first uplink signal and the first uplink signal Indication information of the transmission beam of an uplink signal. A communication terminal includes: a transceiver, a memory, a processor, and a computer program stored on the memory and running on the processor; wherein the processor is used to receive signaling information dynamically sent by a base station , The signaling information includes transmission beam indication information for indicating the transmission beam of the first uplink signal; according to the signaling information, the transmission beam of the first uplink signal is determined; wherein, the first uplink signal includes the sounding reference signal SRS And at least one of the signals transmitted on the physical uplink control channel PUCCH; or, the first uplink signal is a signal transmitted on the physical uplink shared channel PUSCH, and the transmitted beam indication information is used to indicate one of multiple candidate reference signals Or index of multiple reference signals, the candidate reference signal includes reference signals other than the first reference signal, and the first reference signal is channel status information configured by the base station for the terminal for the uplink transmission mode corresponding to the PUSCH The reference signal corresponding to the uplink reference signal resource acquired by the CSI; Wherein, the processor is configured to: indicate to the terminal the transmission beam of the first uplink signal through physical layer signaling, and the physical layer signaling carries the indication information of the first uplink signal and the transmission beam of the first uplink signal Instruction information.

Images